During the second day of the trial that sees him suing London's Genting's Crockford casino, Phil Ivey formally admitted that he has used a technique called "edge sorting" to "reduce or reverse the perceived house edge."

"It's not in my nature to cheat and nor would I risk my reputation by acting unlawfully in any manner," the 10-time WSOP bracelet winner said. "As a professional gambler, my job is to seek to lawfully reverse or reduce the perceived house edge," he continued.

"My integrity is infinitely more important to me than a big win, which is why I have brought these proceedings to demonstrate that I have been unjustly treated."

According to Ivey, professional gamblers always seek for legitimate ways to process all the information available to all players in order to reduce the house edge. Even if this sometimes results in disastrous losses.

"I use a variety of strategies whilst playing in casinos," he told the judge. "I would not be doing my job very well if I did not seek to use to my benefit weaknesses that I identify in the way that casinos set up or offer particular casino games."

However, "no system is fail-safe," Ivey continued. "Each time I play I risk failing to execute the strategy properly. Some of these are very complex or difficult to execute - which usually results in me losing a lot of money."

The case, which is expected to come to an end by next week, is not the only one which involves Ivey and a casino in a legal battle over contested winnings and the legitimacy of the edge-sorting strategy.

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